0元订单提示添加

 import orderService from './orderService.js'
 import router from '../../router/index.js'
+import Taro from '@tarojs/taro';
+import wx from '../../libs/wx';
 
 // const api = new orderService();
 /**
@@ -23,10 +25,22 @@ export const prePay = function (productId, orderCode, fromWhere, isStore) {
       .then(data => {
         if (data) {
           callWxPay(data, productId, orderCode, fromWhere, isStore)
+        } else {
+          throw new Error('ufo.order.pay fail.')
         }
       })
-      .catch(error => {
-        console.log(error)
+      .catch(() => {
+        // 调用出错
+        Taro.showToast({
+          title: '订单不可支付',
+          duration: 2000,
+          icon: 'none'
+        });
+        setTimeout(() => {
+          wx.redirectTo({
+            url: '/pages/orderDetail/index?orderCode=' + orderCode
+          });
+        }, 2000);
       })
   } else {
     //提示重新登录
@@ -54,7 +68,7 @@ function callWxPay(data, productId, orderCode, fromWhere ,isStore) {
       }
       if (res.errMsg == 'requestPayment:fail cancel') {
         if (fromWhere == 0) {
-          router.go('orderDetail', params);
+          router.go('orderDetail', params, 'redirectTo');
         }
 
       } else {
@@ -64,7 +78,7 @@ function callWxPay(data, productId, orderCode, fromWhere ,isStore) {
           confirmText: "确定",
           complete: function (res) {
             if (fromWhere == 0) {
-              router.go('orderDetail', params);
+              router.go('orderDetail', params, 'redirectTo');
             }
           }
         })